[Chella]

did a long drive, around 300km without stoping (4-5 hours), and I got this error:
247500 - Rail Pressure Plausibility: Positive control deviation/Rail Pressure Too Low.

I deleted the error, since then I have made only short roads of maximum 100-150 km, and the error didn't show up. Until two days ago, when after 300km the car entered in limp mode. After restarting, everything was ok for 15-20 minutes, when I was acceelereting to the bottom, again, limp mode.

My car is 2013 X3 F25 xdrive20d. Brought a used car. Not sure whether this car is remapped.

Any help on this is highly appreciated.